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Co-Existing Accessory Tragus and Auriculotemporal Nerve Syndrome-Coincidence or Common Embryogenesis?
Katelyn J Rypka1, Leslie M Gimenez2
1Department of Internal Medicine, Medical College of Wisconsin Affiliated Hospitals, Milwaukee, Wisconsin, USA.
Pediatric Dermatology
|April 14, 2025
Summary
Accessory tragi, congenital anomalies from the first pharyngeal arch, may indicate auriculotemporal nerve syndrome. This finding links a skin anomaly to facial flushing, suggesting a shared embryonic origin.
Area of Science:
- Embryology
- Autonomic Nervous System Disorders
- Craniofacial Anomalies
Background:
- Accessory tragi are congenital anomalies originating from the first pharyngeal arch.
- Auriculotemporal nerve syndrome (ATNS) is a rare condition causing facial flushing due to aberrant autonomic signaling.
Observation:
- A 5-month-old female presented with a right-sided preauricular accessory tragus.
- She experienced recurrent right-sided facial flushing triggered by fruit purees, diagnosed as ATNS.
Findings:
- This case suggests a novel etiology for ATNS linked to first pharyngeal arch development.
- Both the accessory tragus and auriculotemporal nerve share this embryologic origin.
Implications:
- Recognizing this association may prevent unnecessary food allergy evaluations.
- Further research is needed on connections between congenital dermatologic anomalies and autonomic dysfunction.
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